These plants do well basking in full sun. Can you blame 'em?
See also: Part Sun Shade
Asclepias fascicularis, Narrowleaf Milkweed Seed Balls
Asclepias incarnata, Swamp Milkweed Seed Balls
Asclepias speciosa, Showy Milkweed Seed Balls
Asclepias syriaca, Common Milkweed Seed Balls
Asclepias tuberosa, Butterflyweed Seed Balls
Asclepias viridis, Green Antelopehorn Milkweed Seed Balls